KILLINGTON — The stabbing of a Massachusetts man during a Killington party early New Year’s Day remains a mystery to police.

Vermont State Police Detective Sgt. Butch Abdelnour said Wednesday investigators are coming up short on new information regarding the incident that left 32-year-old Dennis Walsh of Woburn, Mass., with multiple stab wounds and a laceration to his head.

“Nobody is cooperating,” said Abdelnour, adding that Walsh also was not cooperating with the investigation. “When we were taking photos of his injuries he would put his arm up so we would not take photos. In his statement he said ‘I know what happened that night and no I am not telling.’”

The detective said police have names of a handful of people they still need to talk to about the party Tuesday morning, but had nothing new to report.

“It’s still a mystery,” Abdelnour said.

Police responded to the party at 3593 East Mountain Road at about 6:30 a.m. Tuesday after receiving a call about a man covered in blood found in snowbank outside. Police said the man in the snowbank, identified as 32-year-old Joseph Tannetta of Massachusetts was uninjured, but covered in blood that was not his.

Police said Walsh was taken to Rutland Regional Medical Center by friends at the party. He was treated and released later that day.

Of the roughly 100 guests at the party, police said the ones they interviewed were uncooperative, with some saying there had been some sort of fight, but none saying they had witnessed it.

Lt. Charles Cacciatore said Tuesday afternoon that there was significant blood in the snow pile near Tannetta and in the car that took Walsh to the hospital, but no evident blood trail. He said police were not even sure whether the incident began at the party or one of the neighboring buildings.

He added that there was no indication of drug activity at the party.

Abdelnour said most the partygoers had cleared out when police arrived to the house, adding that about 15 to 20 people were still at the house.

The incident remains under investigation and anyone with information is asked to call the state police at 773-9101.